Today, thousands of Montessori schools exist around the world. Dr. Maria Montessori proved that her teaching methods work, but the world was slow to embrace this change during her life. She taught children in the housing projects of Rome, the slums of London and later in life, in India. Disadvantaged young children responded so well, they were often learning at levels beyond their years by the time their study was complete. Montessori understood the learning process in children and how to bring out the best in her students. Following her death, curriculum reform movements in both math and science, studied in part at Harvard's Center for Cognitive Studies, brought forth evidence that supported her work. This book describes her methods, used today in her schools, including sections on motor education, sensory education, a children's house, language and kwledge of the world, freedom, reading music, writing exercises, arithmetic and moral factors.